Andrew f



exact description thereof. which will enable others skilled in the art to make and use the same,

@with taies @anni ffice ANDREW F. BAUM, OF NEW YORK, N. Y., ASS-I GNOR T0 L. H. ROCKWELL.

Letters Patent No. 78,414, dated June 2, 1868; antedatefd ltfay 22, 1868.

IMPROVEMENTIN GATAMENIAL SAGKS.

T0 vALL WHOM IT MAY CONCERN:

Bc it known that I, ANDREW FXBAUM, ofthe city, county, and State of New York, have invented a new and useful Improvement'in Catamenial Sack and I do hereby declare thatI the following is afull, clear, and referencefbeing had to the accompanying drawings, formingpart of this speciiication, in Which- Figurel is aview of the open side of the India-rubber catamenial sack, showing my improved rolled edge.

Eigure 2 is a transverse section, taken in the line a: w, iig. 1.

Similar letters of reference indicate corresponding parts.

This invention relates to animprovement in India-rubber catamenial sacks, and consists in forming the edges by rolling up thelmatcrial into a. solid bead or rib, 'and then curing it with soluble rubber, to make a strong and elastic binding.

i Iam aware that Indiarubber catamenial sacks are made with iniatedcushions or holsters to form the edges, and also with flaps or folds ofthe material, to double the thickness ofthe edges, but both of these plans arc defective, on account of want of strength-aud durability.

The gum becomes heated by contact with the person, and the double edges of th dat sack are thus weake cned, and give way easily, while 'thev same cause immediately destroys the inatcd cushions by the expansion ofthe air within, -which bursts and escapes, thus in both cases rendering the sacks unserviceable, .the wearerto unpleasant accidents.

My improved rolled-edge sack is designed to overcome these difficulties, by an increase of strength in a very compact, neat, and| convenient form. The rolled edge, although solid and strong, is elastic, and adapts itself to the conformation ofthe person, making it an agreeable appendage to wear.

The preparation and management ofthe material for forming thesack are the same as those ordinarily pur-V suerl'in the manufacture of India-rubber sacks, two pieces of sheet rubber being cut and joined together longitudinally by the'gum in solution, to form the oval cup, and then cured.

When the sheet rubberis cut to form the sack A, I extend the sides to form my rolled edges far enough to roll up` and make the edges `a a on both sides ofthe sack, as shown in g. 1. This extension of the sides, for the purpose of forming the rolled edges a ais also indicated in'red in fig. l, and the manner of rolling up the sheet rubber te form the edges al a is shown in tig. 2.

The edges thus formed aresaturated with -the rubber in solution, as` commonly prepared for uniting two pieces in the manufacture of articles of this material, at the time the middle seam of the sack is joined, and I also then attach bythe same means two straps, Z I, for securing the and exposing sack to the person .of the wearer in the usual way. But it will he observed that the straps are shaped broad, and oval at theirjunction with the sack,l

which improved form tits the person better, like the ordinary straightstrap.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent An India-rubber catamenial sack, formed with lrolled edg'es a a, substantially as described. The above specification of my invention signed by me, ths 12th day of February, 1867.

A. F. BAUM.

and' prevents the strap from working by wear into a mere string,

Witnesses:

WM. F. MeNAMAn'h, ALEX. F. Renners. 

